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A family uses 0.3 cubic meter of hot water per day. The temperature of the water is increased 70C as it is heated. Natural gas,

A family uses 0.3 cubic meter of hot water per day. The temperature of the water is increased 70C as it is heated. Natural gas, having a heating value of 38 000 kJ/m3 is used for heating. It is burned with an efficiency of 75 percent. It costs $ 0.035 per cubic meter. Calculate the cost of gas per month

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